Parasitic Strip Loaded Dual Band Notch Circular Monopole Antenna with Defected Ground Structure

In this article a parasitic strip loaded monopole antennas are designed to notch dual and triple bands. The designed models are constructed on one side of the substrate material and on the other end defected ground structures are implemented. The basic antenna comprises a tuning stub and a ground plane with tapered shape slot as DGS. Another model is constructed with circular monopole radiating element on front side and similar kind of ground structure used in the basic rectangular tuning stub antenna. To create notched bands with tuning stubs, two symmetrical parasitic slits are placed inside the slot of the ground plane. The basic model is of the rectangular stub notching triple band and the circular tuning stub antenna notching dual band. Dual band notched circular tuning stub antenna is prototyped on FR4 substrate and measured results from vector network analyzer are compared with simulation results of HFSS for validation

A Comparative study of prevalence of hypertension among Urban, and rural population of south Indian city, Hyderabad

Introduction:-Hypertension (HTN or HT), also known as high blood pressure (HBP), is a long-term medical condition in which the blood pressure in the arteries is persistently elevated. High blood pressure usually does not cause symptoms. Long-term high blood pressure, however, is a major risk factor for coronary artery disease, stroke, heart failure, atrialfibrillation, peripheral vascular disease, vision loss, chronic kidney disease, and dementia. Aims and Objectives:-To estimate the prevalence of Hypertension among the study population above 15 years age group. To compare the study results between urban and rural area population. Methodology: - The present study was a cross sectional study carried out at field practice area of Osmania Medical College, Hyderabad. It is a community based cross-sectional study , total of 1409 persons in the age group of above 15 years were interviewed at their residence and anthropometric measurements were taken. Results:-The prevalence of hypertension was more in females in both in urban and rural areas (22.6% and 26.4%),The prevalence of hypertension was more among lower class 45.4% in urban area where as prevalence is more among upper middle class 29.7% in rural area.The prevalence of hypertension was more in widow/widowers in both urban and rural areas. The prevalence of hypertension was more among Hindus 20.2% in urban area, when compared to rural area prevalence of hypertension was more among Muslims 40%. The prevalence of hypertension was more in widow/widowers in both urban and rural population 34.7% and 52.5% respectively

Parasellar Chondroid Chordoma: a Case Report

Chordomas are distinct tumors which arise almost exclusively in the midline skeleton, from skull base to the sacrum. Chondroid chordoma is a rare form of chordoma with features of chordoma and chondrosarcoma arising almost at skull base. We report a case of a right parasellar chondroid chordoma in 54 years old female. Histopathology and IHC confirm the diagnosis of this case

Lipofibroma of the Uterine Cervix- A Rare Benign Tumor with Brief Review of Literature

Lipomas of the uterus are rare and cervical involvement is another rare entity. Approximately 200 cases have been reported in the literature and the incidence ranges between 0.03% to 0.2%. The lesion has lately been discussed interestingly due to its diagnostic confusion with sarcomas on radiographic examination and also due to their disputed histogenesis. We report a case of 36 years old woman presenting with non-specific lower abdominal pain and vaginal discharge who underwent hysterectomy for abnormal pap smear result and an ultrasound diagnosis of a large cyst in the posterior lip of the cervix. Histopathology revealed intramural lipofibroma of the cervix

Reviews on drag reducing polymers

Polymers are effective drag reducers owing to their ability to suppress the formation of turbulent eddies at low concentrations. Existing drag reduction methods can be generally classified into additive and non-additive techniques. The polymer additive based method is categorized under additive techniques. Other drag reducing additives are fibers and surfactants. Non-additive techniques are associated with the applications of different types of surfaces: riblets, dimples, oscillating walls, compliant surfaces and microbubbles. This review focuses on experimental and computational fluid dynamics (CFD) modeling studies on polymer-induced drag reduction in turbulent regimes. Other drag reduction methods are briefly addressed and compared to polymer-induced drag reduction. This paper also reports on the effects of polymer additives on the heat transfer performances in laminar regime. Knowledge gaps and potential research areas are identified. It is envisaged that polymer additives may be a promising solution in addressing the current limitations of nanofluid heat transfer applications